How to Apply : The duly filled in application form should be sent in an envelope super scribing on the cover prominently – “Selection of SC & ST Candidates for the post of JAO in MTNL” - latest by 24/06/2011 by Speed Post to General Manager (HR), MTNL, 6th Floor, Room No. 605, Mahanagar Doorsanchar Bhawan, New Delhi – 110002.